A Current-Fed Dual-Half-Bridge-Based Composite Converter With Improved Light-Load Efficiency Through a Multi-Variable Optimization
Due to its frequent occurrence in the electric vehicle (EV) and hybrid electric vehicle (HEV) applications, light-load efficiency of the dc–dc converter is critical. Different from the conventional boost converter, in this work, a novel composite converter is proposed and investigated to achieve significantly improved light-load efficiency. The proposed converter consists of a current-fed dual-half-bridge (CF-DHB) converter module and a boost converter module, which can be controlled and optimized independently. The interconnection of the two modules leads to advantages, such as lower voltage stress across the power device and a wide conversion ratio. In this article, a multi-variable efficiency optimization method is proposed utilizing the topology advantages of the proposed converter to address the light-load efficiency issue. Based on the loss model, the power sharing between the two converter modules and the switching frequency of the boost converter module are optimized at light load. A 30-kW silicon carbide (SiC)-based composite dc–dc converter prototype is built to validate the proposed multi-variable efficiency optimization method in the light-load operating conditions. Extensive experimental results are presented to demonstrate the noticeable efficiency improvement brought by the proposed method.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/23327782
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Supplemental Notes:
- Copyright © 2022, IEEE.
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Authors:
- Lin, Nan
- Zhao, Zhe
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0000-0001-5511-3764
- Diao, Fei
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0000-0001-7107-0506
- Zhao, Yue
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0000-0002-4712-9819
- Balda, Juan Carlos
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0000-0001-9924-2293
- Publication Date: 2022-6
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 3008-3020
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Serial:
- IEEE Transactions on Transportation Electrification
- Volume: 8
- Issue Number: 2
- Publisher: Institute of Electrical and Electronics Engineers (IEEE)
- ISSN: 2332-7782
- Serial URL: http://ieeexplore.ieee.org/servlet/opac?punumber=6687316
Subject/Index Terms
- TRT Terms: Direct current; Energy consumption; Optimization; Power converters; Power modules; Silicon carbide
- Subject Areas: Energy; Highways; Materials; Vehicles and Equipment;
Filing Info
- Accession Number: 01853324
- Record Type: Publication
- Files: TRIS
- Created Date: Jul 27 2022 2:29PM